Self-dumping scow.



F. P. EASTMAN.

SELF DUMPING SCOW.

APPLICATION man SEPT-24, 19:4.

Patented May 4, 1915. 2 SHEETSSHEET I THE NORRIS PETERS 60..PHO10-LITHO., WASHINGYON, D. C.

F. P. EASTMAN. SELF DUMPING SCOW.

APPLICATION HL ED SEPT-24, 1914.

Patented May 4, 1915.

2 SHEETS-SHEET 2.

WITNESSES A TTOHNEYS THE NORRIS PETERS CO., PHOTO-LITHQ, WASHINGTON. D.C.

FRANKLIN PIERCE EASTMAN, OF NEW YORK, N.

SELF-DUMPING- SCOW.

Specification of Letters Patent.

Patented May a, 1915.

Application filed September 24, 1914. Serial No. 863,276.

To all whom it may concern:

Be it known that I, FRANKLIN PIERCE EASTMAN, a citizen of the UnitedStates, and a resident of the city of New York, borough of Manhattan, inthe county and State of New York, have invented a new and ImprovedSelf-Dumping Scow, of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a new and improved dumpingscow arranged to permit of safely carrying a load to a dumping place outat sea, to permit in almost any kind of weather discharging the loadwithout requiring extra power, and to prevent the scow from being undulystrained when subjected to the heaving pounding action of a rough sea.

In order to accomplish the desired result, use is made of two hulls orfloats affording between them a hopper for holding the load at the timethe hulls are abutting sidewise at their opposite sides, and forallowing the load to dump automatically on the hulls being forced apartby the load, and connecting means at a right angle to the length of thescow and slidably connect.- ing the hulls with each other to maintainthe hulls in the same plane when in closed or open position.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure l is a plan View of the dumping scow with the hulls in closedposition to form a unitary structure; Fig. 2 is a side elevation of thesame; Fig. 3 is a cross section of the same on the line 33 of Fig. 1;Fig. A is a similar view of the same with the hulls moved apart fordumping the load; F ig. 5 is an enlarged sectional side elevation of theconnecting device for the two hulls, the section being on the line 5-5of Fig. 4; Fig. 6 is a similar view of the Same on the line 6-6 of Fig.4; Fig. 7 is a cross section of the actuating means for turning thecontrolling shaft; and Fig. 8 is a similar view of the brake mechanismon the controlling shaft.

The self-dumping scow in its general construction consists essentiallyof two hulls or floats A and A, adapted to move toward or from eachother in a trans,-

verse direction, the hulls when moving to- I ward each other into aclosed position having their inner or opposite sides abutting to form asingle unitary structure for carrying a load (see Figs. land 8). Thehulls A and A when moved apart into an open position allow .theload todump as shown in Fig. 4. In order to carry the load and to allowself-dumping of the same the hulls A and A are provided with two or moresets or pairs of half hoppers B, B havingbottoms B B inclined downwardlyand inwardly, so that when the hulls A and A are in closed position theneach pair of half hoppers form a whole hopper forv receiving andcarrying a load, as will be readily understood by reference to Fig. 3.When the hulls are allowed to move into open position by the pressure ofthe load on the inclined bottoms B B then the load slides down the saidbottomsinto the sea between the open hulls. As shown in Figs. 1 and 2,the scow is provided with two hoppers, the halves of which are separatedin each hull by a bulkhead C.

Various attempts have been made to provide two hulls of the constructiondescribed and capable of moving toward and from each other, but theseattempts have been failures owing to the means employed for connectingthe hulls with each other, it being understood that the exceedinglyheavy pounding which the hulls are liable to receive when in openposition in a rough sea tends to render the connection unserviceable anddamage the hulls, at the same time preventing the return or closingmovement of the hulls. In order to allowthe said hulls to safely openfordumping purposes in a rough or smooth sea and to permit of returning thehulls to closed position, the following arrangement is made: Atransversely extending beam D is secured to the deck of the hull A ateach end and at itsbulkhead C by the use of bolts or other fasteningmeans E, and each beam D projects beyond the inner side of the hull Aonto the deck of the other hull A, the projecting end extending into aguideway formed by two spaced beams F, F fastened to the deck of thehull -A by bolts or other fastening devices E. The beams F, F projectbeyond the hull A onto the deck of the hull A to thus extend on oppositesides of the fixed end of the beam D. Thus the beam D is bolts. E inposition on the hull A.

guided between the beams F, F and the latter are guided on the sides ofthe .beam D to form an exceedingly strong and rigid structure to holdthe hulls A and A firmly 5 in position, one relative to the other at thetime the said hulls A and A are in the open position shown in Fig. 4. Inorder to insure an easy sliding movement of the projecting end of thebeam D between the fixed 1 ends of the beams F, F use is made of afriction roller G journaled on the hull A and over which travels theunder side of the beam D. Similar friction rollers G are journaled onthe hull A and engage the un- 5 der sides of the projecting ends of thebeams F, F. The ends of the beams F on the deck of the hull A and thefixed portion of the beam D are incased in a casing H bolted orotherwise fastened to the hull A to prevent 2 upward, forward orbackward movement of the projecting ends of the beams F. The fixedportions of the beams F and the projecting end of the beam D are coveredby a top plate H (see Fig. 6) fastened by tge T e sides of the fiXedportions .of the beams F are flanked by plates H forming permanent partsof the hull A. By the arrangement described the beams D and F, F areheld go against forward or backward movement or the beams F, F areprovided with racks F in mesh with gear wheels I secured on a transverseshaft I journaled in the housing H, near the inner side of the hull A,and on the outer ends of the said shaft I are secured sprocket wheels Iconnected by sprocket chains I with sprocket wheels I secured on a shaftJ extending lengthwise ,of the scow on the deck of the hull A near theouter side thereof, the shaft being jour- 5e naled in suitable bearingsJ attached to the said deck. On the shaft J, preferably at the middle ofthe scow, is secured a brake wheel K around which passes a brake band Kfastened at one end to a brake lever K under the control of an operatorand fulcrumed at K on a bracket K attached to the deck of the hull A.The other end of the brake band K is fixed on the pivot K as plainlyshown in Fig. 8. On one end of the shaft J (see Figs. 1, 2 and 7) issecured.

a ratchet wheel L engaged by a-pawl L pivoted on a hand lever Lfulcrumed loosely on the shaft J so that when the hand lever L is swungin the direction of the arrow at then a turning motion is given to theshaft J by the pawl L and the ratchet wheel L vto turn the shaft J witha view to rotate the shaft I to draw the hulls A and A toward each otherinto a closed position. lVhen the hulls are in closed position the shaftJ is locked against return movement by a suitable dog L engaging theratchet wheel L. When the scow is loaded and has been towed out to seato a dumping place, and it is desired to discharge the load, then theshaft J is unlocked by throwing out the pawl L and the dog L from theratchet wheel L to allow the load pressing on the inclined bottoms B Bto force the bulls A and A apart. In order to prevent this movement ofthe hulls A and A from being too sudden, use is made of the brakemechanism above described and shown in detail in Fig. 8, it beingunderstood that an operator having hold of the brake lever K andapplying the brake band K on the brake wheel K with more or less forcecan readily govern the opening movement of the hulls A and A. After theload is discharged the operator throws in the pawls L, L and oscillatesthe hand lever L to rotate the shaft J with a view to cause the hulls Aand A to gradually move toward each other, the movement being nursedaccording to the condition of the sea.

In order to relieve the beams D and F of some of the strain when closingthe hulls A and A, use is preferably made of chains N attached at N tothe lower ends of the bottoms B of the hoppers B, the chains thenextending under guide pulleys N journaled at the lower end of the bottomB of the hoppers B. The chains N, extend upwardly and outwardly alongthe bottoms B to finally connect with drums N secured on the shaft J, itbeing understood that when the hulls A and A are in closed positionportions of the chains N are wound up on the drums N and when the hullsmove apart, as previously explained, and the shaft J is rotating thenthe chains N unwind from the drums N lVhen the shaft J is turned by theaction of the hand lever L for closing the hulls A and A then the chainsare wound up on the drums I and in doing so the chains draw on the lowerportion of the hull A to aid the mechanism previously described andconnected with the beams F for drawing the hulls A and A into closedposition.

In order to protect the sprocket wheels I and the chains I against beingclogged up by the load, use is made of an inclosing casing 0 attached tothe hull A.

It will be noticed that by providing the sliding beam connectionsbetween the hulls A and A at the ends of the pockets and intermediatethe same the hulls are free to move toward and from each other in thesame plane no matter what the condition of the sea, and' a positivedumping of the load-is had asthe hulls move uniformly apart throughouttheir length for dumping the load. v

a It is understood that the beam connection described is capable'towithstand the heavy pounding action which the hulls are liable to besubjected to in a rough sea.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent: v

1. A self-dumpingscow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting sidewiseand for allowing the load to dump automatically on the hulls movingapart, and connecting means at a right angle to the length of the scowand slidably connecting the hulls with each other to maintain the hullsin the same plane when closed or open.

2. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the bulls are abutting sidewiseand for allowing the load to dump automatically on the hulls movingapart, and connecting means at a right angle to the length of the scowand slidably connecting the hulls with each other above the water lineto maintain the hulls in the same plane when closed or open.

3. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite sides, a transverse guideway at one of the said hulls, and abeam fixed on the other hull and slidably engaging the said guideway.

4. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite sides, a transverse guideway at one of the said hulls, a beamfixed on the other hull and slidably engaging the said guideway, andmanually controlled means for drawing the hulls together after dumping.

5. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite sides, a pair of spaced beams extending transversely and secured to one of the hulls, the said beams forming a guideway betweenthem, and a transverse beam secured on the other hull and slidablyfitting the said guideway.

6. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite inner sides, a pair of spaced beams extending transversely andsecured to one of the hulls and projecting a distance beyond the innerside of this hull, the said beams forming a guideway between them, and atransverse beam attached to the other hull andprojectingbeyond the innersidefof this hull, the projecting end slidably engaging the. saidguideway. i

7. A self-dumping scow, comprising two hulls affording between them ahopperfor holding the load at the time the hulls are abutting at theiropposite inner sides, a pair of spaced beams extending transversely andsecured to one of the hulls and project ing a distance beyond the innerside of this hull, the said beamsforming a guideway between them, atransverse beam attached to the other hull and projecting beyond theinner side of this hull, the projecting end slidingly engaging the saidguideway, racks on the projecting ends of the said spaced beams, gearwheels journaled on the hull having the single beam and in mesh with thesald rack, a shaft lengthwise of the hull carrying the said gear wheels,a flexible connection between the said gear wheels and the said shaft,and a brake connected with the said shaft to control the hulls whenmoving apart into open dump'ing position.

8. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite inner sides, a pair of spaced beams extending transversely andsecured to one of the hulls and projecting a distance beyond the innerside of this hull, the said beams forming a guideway between them, atransverse beam attached to the other hull and projecting beyond theinner side of this hull, the projecting end slidingly engaging the saidguideway, racks on the projecting ends of the said spaced beams, gearwheels journaled on the vhull having the single beam and in mesh withthe said rack, a shaft lengthwise of the hull carrying the said gearwheels, a flexible connection between the said gear wheels and the saidshaft, and means for turning the said shaft to draw the hulls towardeach other when in open position.

9. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite inner sides, a pair of spaced beams extending transversely andsecured to one of the hulls and projecting a distance beyond the innerside of this hull, the said beams forming a guldeway between them, atransverse beam attached to the other hull and projecting beyond theinner side of this hull, the projecting end slidingly engaging the saidguideway, racks on the projecting ends of the said spaced beams, gearwheels journaled on the hull having the single beam and in mesh with thesaid rack, a shaft lengthwise of the hull carrying the said gear wheels,a flexible connection between the said gear wheels and the said shaft, awinding drum on the said shaft,

and a flexible connection connecting the said Winding drum with the hullhaving the spaced beams.

1.0. A self-dumping scow, comprising two hulls affording between them ahopper for holding the load at the time the hulls are abutting at theiropposite inner sides, a pair of spaced beams extending transversely andsecured to one of the hulls and projecting a distance beyond the innerside of this hull, the said beams forming a guideway between them, atransverse beam attached to the other hull and projecting beyond theinner side of this hull, the projecting end slidingly engaging the saidguideway, a shaft extending lengthwise on one of the said hulls, agearing connecting the said shaft with the beam on the other hull, adrum on the said shaft, a flexible connection between the said drum andthe other hull, a brake on the 20 said shaft, means for rotating thesaid shaft, and means for locking the said shaft against rotation.

In testimony whereof I have signed my name to this specification in thepresence 25 of two subscribing witnesses.

FRANKLIN PIERCE EASTMAN.

Witnesses:-

THEO. G. Hos'rnn, G. H. EMsLIE.

Gopies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents, a h ng n: D: Q5"

